Fix `ElementHandle` extension
Fix `ElementHandle` extension

Bug: none
Change-Id: I5f7d4ec242fd26043084e2f08c905cbdf1d1228c
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/3748106
Reviewed-by: Alex Rudenko <d8d88e7d7e77f69e23d1d1432231196fb8e02a62@chromium.org>
Commit-Queue: Alex Rudenko <d8d88e7d7e77f69e23d1d1432231196fb8e02a62@chromium.org>

ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend